Yeah there is Shadowfire, but I think its mostly dedicated to gamers. ZAnet was the big one, it was huge back in the day. It is completely empty, I just checked it now. Theres like no one on besides Gaspode.

There's a channel for mybb already, look for the archives. Doubt it's active though. I was reminiscent of the #5fm days (back in the late 90's early 2000's) so I downloaded a copy of mIRC and went for it. That place is a ****ing ghost town now